This doesn't work for me, I think you may just have to accept that improving this image just isn't going to work, it looks like you had too much on the radius setting of the USM. It's potentially a lovely shot, but I think only a reshoot is the answer.

Great complimentary colours. The slightly soft focus makes it more like a poster print than a photograph, for me. It is one of those images that looks absolutely stunning at the thumbnail size, but the softness perhaps lets it down a little at full size. I still like it though :-)